/Engine/Plugins/MovieScene/MovieRenderPipeline/Source/MovieRenderPipelineCore/Public/MoviePipelineSetting.h
This is called once on a setting when the movie pipeline is first set up. If the setting only exists as part of a shot override, it will be called once when the shot is initialized.
void OnMoviePipelineInitialized ( [UMoviePipeline](API\Plugins\MovieRenderPipelineCore\UMoviePipeline) * InPipeline )